Paper receptacle



Oct. 15, 19.40. G, F TWQMBLY v` 2,218,388

PAPER RECEPTLE` Filed May 3l, 1955 ATTORNE Y.

Patented ot.15, 194o l 2,218,388

UNIT-ED STATES "l PATENT OFFICE raraazlizzluow George F. Twombly, Mmm-a,Mus.

Application May 31, 1935, Serial No. 24,298 4 claims. (c1. 229-21) Thisinvention relates to paper receptacles comprising colored glassine paperwhich is adapted for 'use particularly as baking utensils, secured tothe inner wax paper lining by iiutings and to a novelmethod of makingthe same, and simultaneously crimped in both sheets during the morespecically it pertains to an article of that shaping operations.character which sfmade with an outer lamina- In the preferred embodimentof my invention I 5 tion of colored glassine paper lined with an inneralso interpose between the outer decorative lamination of colorless waxpaper, combined land colored glassine sheath and the inner wax papersecured together in a novel manner to produce a lining a thin film ofWax which, upon the applipaper receptacle which possesses greater cationof heat and pressure is caused to flow and,

lo strength, is more moisture-proof and is more afterdrying, forms ailrmbond between the inner easily handled by the baker, than priorreceptaand outer laminations of the container. By the cles of a similarnature and which, by reason of provision of such a wax lm I not .onlyprovide -its outer decorative colored lamination, imparts a bond betweenthe paper layers, but I also maan attractive appearance to thefoodterially increase the strength of the receptacle l5 Articles of thischaracter in common use hereand enhance its desired moisture-proof char-I6 tofore which have been made from single sheets lacteristics. of waxpaper, have presented a rather drab ap- In its method aspect myinvention-provides for pearance, due partly to the necessity for using athe forming 0f e large number 0f Containers colorless sheet to avoid4contamination of the food simultaneously in nested form whereby any debycoloring matter, and such receptacles, furthersired shape and'size ofcontainer can be made in 20 more, have had their limitations in thattheir a simple-and effective manner, and, as will apflimsy constructionhas usually prevented their pear from a more detailed description of mylnbeing used alone as baking receptacles and has vention, the nestedassembly of a plurality of required them to be usedas linings insertedwithcontainers produced by my novel method of conin the ordinary metalbaking pans. struction also possesses a number of desirable 25 In'aneffert to produce a paper container which and, I believe, uniquecharacteristics. is attractive in appearance and which is also of Theseand further objects and advantages of a suiciently strong constructionto permit its use my invention will appear from a more detailedindependently as a baking utensil, it vhas been description thereof,taken in connection with the y proposed to construct containers from twosheets accompanying drawing, in which- 30 of paper glued together, theouter sheet being Fig- 1 isa perspective VieW 0f e Set 0f glaSSnecorrugated and also colored. United States and wax sheets superimposedon each other and patent to Scott, No. 1,811,566 shows such a concut tothe desired shape in readiness fOr 'diestruction. Manufacturing problemsare pre- DreSSiIlg t0 fOIIu a IleSt Of receptacles; sented whenattempting to use corrugated paper Fig. 2 iS 2. plan View of a nest of aplurality glued to a liner to construct such containers, due 0freCeDteCleS pressed from the Sheets illustrated 35 to the fact that suchstructure does not lend in Fig. 1; itself to being die-pressed into anydesired re- Fig- 3 S a perspective VieW 0f the nest 0f c011- ceptacleform. tainers of Fig. 2 with the innermost receptacle m It is an objectof my invention to obviate the being removed; 40

limitations inherent in prior articles of this na- Fig. 4 is aperspective view of a -nest of reture and to provide a container whichcan readily ceptacles of rectangular form; and be die-pressed intoreceptacle form and which is Fig 5 is ,2, perspective View 0f a, singleresturdy in construction, permitting its use indeceptacle, Dendently aS9 baking utensil and which 2180 Referring tothe drawing, I haveillustrated in 45 l lends itself t0 attractive 001er ,effeCtS- It iS myFig. 5, the finished receptacle which is the subject further purpose t0DI'OVide e Simplified method 0f of the present invention. As thereinindicated, manufacturing an article Which DOSSeSSeS these the receptacledesignated generally at I is condesirable CharaeteriStCS- structed of aninner lamination 2 of colorless wax l heVe found that a utensil 0f thisCharacter paper sheathed in an outer lamination 3 of 50 can beeiectively constructed from two sheets of glassine paper which ispreferably colored to en- Daper, one nested within the other anddiehance the appearance of the receptacle. The` Pressed t0 the desiredreceptacle form, the ilmel side Walls of the receptacle are formed witha sheet comprising uncoloredwax paper suitable plurality of flutings oraccordion pleats 6 which a5 forcontact withthe food and the outer sheetare crimped in both laminationsof the receptacle 55 simultaneouslyduring the manufacture and these flutings .not only give the receptaclethe desired shape, but they also serve to secure together the inner andouter laminations. This double layer uted construction also provides areceptacle which is stronger than those heretofore in commonV use,thereby providing a utensil which can itself be used independently as areceptacle, as its side wall 8 does not require ex-l ternal support by abaking Dan or the like during Vthe cooking.

.It will be observed that by providing a twolayer construction I am ableto provide an outer layer 3 which is colored to impart an attractiveappearance to the comestibles and an inner layer 2 of colorless waxpaper which is sanitary andl las 'lining 2 and the glassine decorativesheath 3.

a result of the application of heat and pressure to the excessivelywaxed surface to insure that that the Wax layer I during the process ofmanufacture as hereinafter described, the wax is caused to flow betweenthel laminations 2 and 3 of the receptacle and, upon drying, becomes setto` form a firm bond between the laminations. The rigidity of thereceptacle is increased by the provision of the lm of wax i0 and such afilm also enhances the moisture-proof properties of thereceptacle. *s

In accordance with my preferred method of making such receptacles. Ifirst cut a plurality of sheets of glassine and wax paper to that shape,which, after die-pressing into receptacle form, will product areceptacle of the desired shape and dimension.v The glassine paper whichI employ is of the usual character well known by that name to the tradeand is preferably colored to enhance the appearance of thefinishedreceptacle. `I'he wax paper is preferably not only impregnated with wax,but, for the purpose of pro- 'viding the intermediate wax film IU, itisalso provided with a relatively greater amount of wax on one surfacethan on the opposite surface. A suillcient amount of'pwax should beprovided on surface of the'waxed paper will become fairly moist upon theapplication of heat.

A number of wax paper and glassine paper sheets of the abovecharacteristi after being cut-to the desired4 shape as desc d above, arethen superimposed alternately upo each other to form the pile of sheetsindicated generally at 20 in Fig. l. The upper sheet 2| of the pile is awax paper sheet, the undersurface 22 of which is provided with an excessof plastic wax. Disposed immediately beneath the sheet 2| is a coloredglassine sheet 23, beneath which is disposed another wax sheet 24, andso on. f

The pile of superimposed wax and glassine sheetsso arranged is thendie-pressed. by means of. apparatus of a type well known in the art andprovided with a male and a female die shaped in the form desired for thereceptacle. .This ap' `paratus in one operation produces the nest of yreceptacles illustrated at 30 in Fig. 2 with the ilat bottom portions 'iand the fluted side walls 8. During this pressing operation I providefor the application of heat to the layers of sheetsgbeing pressed inlany effective manner such as by heat# ing both the inner and outerdies, and I have found that the heat so applied will penetratecompletely vthrough a rather large number of superimposed glassine andwax paper sheets in an amount suilicient .to melt the wax film 22 oneach of the wax paper sheets 2| in the pile. 'Ihe simultaneousapplication of heat and pressure causes the plastic wax 22 to flow and,after the nest 30 of receptacles so formed has been removed from thepress and permitted to cool, thewax fllm will set and form a ilrm bondbetween each wax paper sheet` 2| and its companion glassine sheet 23.

The'nest of receptacles 30, illustrated in Fig. 2, is sent to the bakerin the form shown, without separating the individual receptacles, andbakers have found that such a nest ofreceptacles forms a handy means ofsupply from which the individual receptacles can very easily and rapidlybe distributed on the large baking pans or trays preparatory to fillingthe receptacles with individual batches of dough. By engaging the innerlayer 2 of the nest with the foreiinger while restraining the remainderof the nest'with the thumb, as illustrated in Fig. 3, the inner layer 2of wax paper is elevated and, as a result of the adhesive properties ofthe intermediate Wax lm l0, the companion layer 3 of colored glassinepaper is simultaneously withdrawn to produce the complete receptacle. Ihave found that the removal together of the companion layers forming anindividual receptacle is facilitated by the presence on the insidesurface 2| of each receptacle of-a veryl slight amount of wax which hasseeped through the Wax paper from the excessively waxed surface 22during the heating operation, which slight amount of wax functions as alubricant to aid in the removal of the glassine layers with their`companion wax paper layers from the closelycompacted nest. By repeatingthis simple operation the individual receptacles are with- -drawn fromthe nest and vthe baker need not manipulate the various layers of thenest torin-l .sure that both 'laminations of any individual receptacleare withdrawn together from the nest. In Fig. 4 I have illustrated amodified form of receptacle to indicate the manner in which the iiutingsare employed where other than circular surfaced, as indicated; Joiningthe end walls 5 by iiuted corners 26 as shown. 'I'he iiutings 26 may ofcourse-be more extensive than indicated in the drawing and if desiredthe side walls 4 and end walls 5 may also be provided .with relativelyshalfour corners.

low utings joining 4the deep iiutings 26'at the colored and uncoloredlayers bonded together by lms ofY wax interposed between the colored anduncolored layers and in which `a greater quantity of wax is disposedbetween each colored layer andthe next adjacent enclosed uncolored layerthan between the said colored layer and the next adjacentouter'uncolored layer, whereby, when an uncolored layer is withdrawnfrom the group a surrounding colored layer is simultaneously withdrawnto produce a two-ply receptacle having an uncolored layer enclosed by acolored layer. l

2. As an article-of manufacture a compacted group of a large number ofpaper-like laminations formed by superimposing alternate waxed andunwaxed sheetsV to form a pile and simultaneously pressing all of thesheets in the pile into receptacle form with each unwaxed layerenclosing a.V contiguous waxed layer and in which there is a greateradhesion between each unwaxedv layer and the next adjacent waxed layerenclosed therein than between each unwaxed layer and thea-next adjacentouter waxed layer, whereby when a waxed layer is withdrawn from thegroup a surrounding unwaxed layer is simultaneously withdrawn to form atwo-ply receptacle having a waxed layer enclosed by an adhered unwaxedlayer.

3. As an article of manufacture a compacted group of a large number ofpaper-like laminations formed by superimposing alternate sheets of waxedand unwaxed paper-like material to form a pile, each of said waxedsheets carrying a greater amount of wax on one surface than on the otherand being so disposed in the pile that the surfaces carrying the greateramount of wax all face in the same direction throughout the` pile,pressing simultaneously all of the sheets in the pile into receptacleform in whichA said waxed 5 sheets have their surfaces carrying thegreater l amount of wax formed convex, heating the pile of sheets tosoften the wax, and thereafter allowing the wax to cool.

4. As an article of manufacture a compacted 10 group of mutuallyadherent layers of paper-like material shaped in receptacle form. all ofsaid layers being compactly crimped together with interlocking flutingsand having alternate layers bonded to layers contiguous thereto by lmsof 15 GEORGE F. TWOM'BLY.

